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Guide · ECU file

ECU File: Process Your Own ECU Tuning File with Software

An ECU file is the software file read from the vehicle's engine control unit. EcuPrime is ECU remapping and chiptuning software: you upload the original file you read with your own tool, the software identifies the ECU from the file itself and enables only the operations that apply to your file. The pre-check is free.

Upload your file freeGo to the brand index
Free pre-checkECU identification and applicable operations without credits
Credit only on successNo charge if it fails
Byte-level checksUnverified results are labelled
PrimeChecksumbuilt-in checksum engine

Basics

What is an ECU file? ORI and MOD

Original file (ORI)

The unmodified ECU software read from the control unit. This is what you upload; keep a backup before any operation.

Modified file (MOD)

The file with your selected operation applied. The software produces it from your own original file; you download the result and write it to the vehicle with your own tool.

Reading tool

You read the file from the control unit and write it back yourself. The software looks at the file itself, not the reading tool.

Tool compatibility →

Operations

What you can do with your ECU file here

Not all of them open on every file: the software enables only the operations that apply to yours.

Stage 1Typical gains in power and torque with a livelier throttle response.DPF OffRegeneration cycles and DPF fault codes are disabled in the software.EGR OffEGR valve control and related fault codes are switched off in the software.AdBlue / SCR OffAdBlue/SCR dosing and its related warning functions are switched off in the software.Full Emission OffDPF, EGR and AdBlue/SCR are switched off together in one file, in one job.Stage 2Advanced calibration matched to hardware upgrades such as exhaust or intercooler.DTC OffOnly the selected fault codes are removed; other diagnostic functions stay in place.Vmax OffThe factory speed limiter is removed in the software.Decat / Catalyst OffCatalyst monitoring and related fault codes are switched off in the software.Lambda / O2 OffLambda (O2) sensor monitoring and related fault codes are switched off in the software.TVA OffThrottle valve actuator (TVA) control and related fault codes are switched off in the software.Swirl Flaps OffIntake swirl flap control and related codes are switched off in the software.Pop & BangCalibration that adds exhaust pops and bangs on overrun.E85 Flex-FuelFuel calibration for running the engine on E85 (ethanol blend).Start & Stop OffThe automatic start-stop system stays off by default.Immo OffSoftware solution for immobiliser-related no-start problems.Torque Limiter OffFactory torque limitation maps are recalibrated in the software.Stage 3Calibration for extensive hardware changes such as a larger or hybrid turbocharger.Gearbox (TCU) CalibrationGearbox shift points and response are recalibrated.

Operations on emission systems are offered only for use permitted by local law (e.g. off-road / motorsport / export); responsibility lies with the user.

Flow

EcuPrime: ECU remapping and chiptuning software

Upload

Upload your original ECU file

Select

The system detects the ECU from the file and enables only genuinely applicable solutions

Process

The solution is verified at hex level and applied

Download & Checksum

Credit is charged only on successful delivery. The checksum is corrected in a separate tab with the built-in PrimeChecksum.

Vehicle type

ECU files by vehicle type

Car ECU TuningTruck ECU TuningTractor ECU TuningMarine ECU TuningMotorcycle ECU Tuning

Brands

ECU files by brand (A–Z)

Each brand page lists that brand's control units and the operations with verified solutions in the library.

ABARTHCarAEBI-SCHMIDTConstructionAGCOTractorAGRALETruck · BusAGRIFACTractorAICHITruck · BusALBACHConstructionALEXANDER DENNIS LTDTruck · BusALFA ROMEOCarALPINACarAMAZONETractorARBOSTractorARJESConstructionATLASConstructionATLAS COPCOConstructionAUDICarBAICCarBEIBENTruck · BusBENELLIMotorcycleBENTLEYCarBMCTruck · BusBMWCarBOBCATConstructionBUICKCarC&C TRUCKTruck · BusCADILLACCarCARRAROTractorCASE IHTractorCATERPILLARConstructionCFMOTOMotorcycleCHALLENGERTractorCHANGANCarCHERYCarCHEVROLETCarCHRYSLERCarCITROENCarCLAASTractorCUMMINSTruck · BusCUPRACarDACIACarDAFTruck · BusDATONGTruck · BusDEUTZ-FAHRTractorDODGECarDOOSANConstructionDSCarERKUNTTractorFENDTTractorFERRARICarFIATCarFORDCarFORD TRUCKTruck · BusFOTONTruck · BusFREIGHTLINERTruck · BusGENESISCarGMCCarHATTATTractorHINOTruck · BusHONDACarHYUNDAICarINDIANMotorcycleINFINITICarINTERNATIONALTruck · BusISUZUCar, Truck · BusIVECOTruck · BusIVECO FPT MARINEMarineJAGUARCarJCBConstructionJEEPCarJMCTruck · BusJOHN DEERETractor, ConstructionJOHN DEERE MARINEMarineKARSANTruck · BusKATOConstructionKENWORTHTruck · BusKIACarKIOTITractorKUBOTATractorLAMBORGHINITractorLANCIACarLAND ROVERCarLANDINITractorLEVCCarLEXUSCarLINDEConstructionLIUGONGConstructionMACK TRUCKTruck · BusMAHINDRACarMANCar, Truck · BusMANITOUConstructionMASERATICarMASSEY FERGUSONTractorMAZDACarMCCORMICKTractorMERCEDES TRUCKSTruck · BusMERCEDES-BENZCarMERLOConstructionMGCarMINICarMITSUBISHICarMitsubishi FusoTruck · BusMTZTractorNEW HOLLANDTractorNISSANCarNISSAN UD TRUCKSTruck · BusNPRTruck · BusOPELCarOTOKARTruck · BusPETERBILTTruck · BusPEUGEOTCarPORSCHECarQJ MOTORMotorcycleRENAULTCar, Truck · BusROTAXMotorcycleROVERCarSAABCarSAMETractorSCANIATruck · BusSEATCarSEGWAYMotorcycleSHMIDTConstructionSINOTRUKTruck · BusSKODACarSMARTCarSOLISTractorSSANGYONGCarSUBARUCarSUZUKICarTEMSATruck · BusTEREXConstructionTOYOTACarVALTRATractorVOLKSWAGENCarVOLKSWAGEN TRUCKSTruck · BusVOLVOCar, Truck · Bus, ConstructionVOLVO PENTA INDUSTRIALConstructionVOLVO PENTA MARINEMarineXCMGConstructionXINCHAIConstructionYANMARTractorZOOMLIONConstruction

Control units

ECU manufacturers

BoschContinentalSiemensDensoValeoVisteonMotorolaACDelcoMarelliDelphiVDOSagemLucasTemicTRWZFKeihinMitsubishi ElectricTranstronPhoenix

All supported ECUs →

Let the software do the file

A program does the whole chiptuning file job: upload your original ECU file; the system identifies the ECU from the file, opens only the verified solutions that fit it and applies your choice byte by byte. The pre-check is free.

Chiptuning File Service →

Help

Frequently asked questions

What is an ECU file?

It is the software file read from the vehicle's engine control unit (ECU). It is read with a reading tool; the unmodified version is the original (ORI) file and the version with an operation applied is the modified (MOD) file.

How is a modified ECU tuning file made?

The flow has three steps: upload the file, choose the operation, download your file. The software enables only the operations that fit your file; one that does not fit is not applied. Writing the file to the vehicle and, where needed, correcting the checksum remain your steps.

Which file should I upload?

The original (raw) file you read from the ECU with your own tool. The ECU is identified from the file itself; if it is not recognised, the panel asks you to select the vehicle type, make and ECU yourself. The pre-check is free.

Which operations are available?

Stage 1, DPF Off, EGR Off, AdBlue / SCR Off, Full Emission Off, Stage 2, DTC Off, Vmax Off, Decat / Catalyst Off, Lambda / O2 Off, TVA Off, Swirl Flaps Off, Pop & Bang, E85 Flex-Fuel, Start & Stop Off, Immo Off, Torque Limiter Off, Stage 3, Gearbox (TCU) Calibration. Not all of them open on every file; the software enables only the operations that apply to yours.

Is the checksum done automatically?

The checksum is not corrected automatically in the delivered file. Checksum correction happens inside the platform, in a separate tab: 1 credit, charged only when the result is ready. Some newer-generation ECUs (RSA-signed) need an external tool; the system detects this and warns you.

How is the price calculated?

A module job costs 1 credit (any number of modules in one job); Stage 1 costs 2 credits for cars/bikes and 3 credits for trucks, tractors and construction machines. No credit is charged for a job without a result. A package is bought once and renewed every year with the annual licence. The pre-check is free.

Start today

A free account for dealers and tuning pros: upload your file, see which operations work, apply your solution.

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